Application Express :: Getting Chart With 4 Lines And 2 Y Axis?

i need a chart with 4 lines and 2 y axis. 2 lines on the first y axis, 2 lines on the other y axis.First i tried to create 4 series and "multiple y axis", then i get the first line at one y axis, and all the other lines at the second y axis.

After that i have seen that it is possible to return more than one value within one series, so i create 2 series with 2 values each - i thought that then i will get the first 2 values at one y axis and the other 2 lines of the second serie at the second y axis... but sadly it is not like i expected - i get the same result as with 4 series.is it really necessary to create a custom xml for that?

here is my example: [URL] as you can see the blue and the red line are on different axis.the query of one serie looks like that (it gives the values of a day and the day before), the queries are ok.

select null link, to_char(a.ts,'DD.MM HH24:MI') label, sum(a.kw*100/12) over (
partition by trunc(a.ts) order by a.ts rows between
unbounded preceding and current row
) "KWh",
sum(b.kw*100/12) over (
partition by trunc(b.ts) order by b.ts rows between

[code]....